@Article{ 
  sunyezmen07,
  author = { Mennucci, Andrea C. G. and Sundaramoorthi, Ganesh and Yezzi, Anthony },
  title = { Coarse-to-fine segmentation and tracking using Sobolev Active Contours },
  journal = { IEEE Transactions on Pattern Analysis and Machine Intelligence },
  year = { 2008 },
  doi = { 10.1109/TPAMI.2007.70751 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1050/ },
  note = { cvgmt preprint}
}